Heat steamer



FIG. 1 is a front perspective view of a heat steamer showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The details shown in broken lines form no part of the claimed design. 

We claim the ornamental design for a heat steamer, as shown and described. 